"use strict";

exports.__esModule = true;
exports.removeResizeListener = exports.addResizeListener = void 0;
var _resizeObserverPolyfill = _interopRequireDefault(require("resize-observer-polyfill"));
var _throttleDebounce = require("throttle-debounce");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
function _createForOfIteratorHelperLoose(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (t) return (t = t.call(r)).next.bind(t); if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var o = 0; return function () { return o >= r.length ? { done: !0 } : { done: !1, value: r[o++] }; }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
var isServer = typeof window === 'undefined';

/* istanbul ignore next */
var resizeHandler = function resizeHandler(entries) {
  for (var _iterator = _createForOfIteratorHelperLoose(entries), _step; !(_step = _iterator()).done;) {
    var entry = _step.value;
    var listeners = entry.target.__resizeListeners__ || [];
    if (listeners.length) {
      listeners.forEach(function (fn) {
        fn();
      });
    }
  }
};

/* istanbul ignore next */
var addResizeListener = exports.addResizeListener = function addResizeListener(element, fn) {
  if (isServer) return;
  if (!element.__resizeListeners__) {
    element.__resizeListeners__ = [];
    element.__ro__ = new _resizeObserverPolyfill.default((0, _throttleDebounce.debounce)(16, resizeHandler));
    element.__ro__.observe(element);
  }
  element.__resizeListeners__.push(fn);
};

/* istanbul ignore next */
var removeResizeListener = exports.removeResizeListener = function removeResizeListener(element, fn) {
  if (!element || !element.__resizeListeners__) return;
  element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);
  if (!element.__resizeListeners__.length) {
    element.__ro__.disconnect();
  }
};